US10827379B2 - Terminal device, base station device, and method for controlling QoS - Google Patents

Terminal device, base station device, and method for controlling QoS Download PDF

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US10827379B2
US10827379B2 US16/238,238 US201716238238A US10827379B2 US 10827379 B2 US10827379 B2 US 10827379B2 US 201716238238 A US201716238238 A US 201716238238A US 10827379 B2 US10827379 B2 US 10827379B2
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qos
particular application
terminal apparatus
control information
service flow
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US20190268798A1 (en
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Sang Soo JEONG
Jong Han Park
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SK Telecom Co Ltd
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SK Telecom Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0268—Traffic management, e.g. flow control or congestion control using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/08—Load balancing or load distribution
    • H04W28/09—Management thereof
    • H04W28/0992—Management thereof based on the type of application
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/14—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/22—Manipulation of transport tunnels

Definitions

  • the present disclosure relates to a method of realizing a service flow-based QoS control without an increase in complexity compared to a conventional bearer-based QoS control method and enabling a QoS control for an initial service flow generated according to a service request to improve a response time of the service request.
  • a Quality of Service (QoS) level varies depending on the media type of application service used by a terminal apparatus (user), and a QoS control for transmitting a packet of the application service with a guaranteed QoS level suitable for the media type is provided.
  • QoS Quality of Service
  • the QoS control method provided by an LTE network is an EPS bearer (hereinafter, referred to as a bearer) based QoS control method.
  • the terminal apparatus In the LTE network, the terminal apparatus (user) generates an EPS bearer, that is, a bearer for transmitting data to use an application service.
  • an EPS bearer that is, a bearer for transmitting data to use an application service.
  • the bearer may be a tunnel (a radio section+a wired section) generated between the terminal apparatus and a P-GW via the wireless section connecting the terminal apparatus and a BS device and the wired section connecting the BS device, an S-GW, and the P-GW.
  • a tunnel (a radio section+a wired section) generated between the terminal apparatus and a P-GW via the wireless section connecting the terminal apparatus and a BS device and the wired section connecting the BS device, an S-GW, and the P-GW.
  • Data of the terminal apparatus is transmitted in the form of an IP-based packet through the tunnel, that is, the bearer, and a traffic flow according to packet transmission is referred to as a service flow.
  • the conventional bearer-based QoS control method defines a QoS level (QoS parameter) for each bearer and guarantees (applies) the QoS based on bearers, so that service flows transmitted through one bearer are all applied and transmitted with the same QoS (QoS level of the bearer).
  • the conventional bearer-based QoS control method has an advantage in that complexity of the QoS control can be reduced but has a limit in that different QoS cannot be applied to service flows belonging to one bearer.
  • the limit is not a big problem in a situation in which types of application services are relatively limited.
  • the limit may be a problem which should be solved in a current or future situation (for example, 5G) where various types of application services are developed/introduced rapidly.
  • an aspect of the present disclosure is to implement the service flow-based QoS control for enabling more differential QoS application without an increase in complexity compared to the conventional bearer-based QoS control method and put a priority to a service request for improving a response time of the service request.
  • the aspect of the present disclosure is to realize a service flow-based QoS control for enabling more differential QoS application without an increase in complexity compared to the conventional bearer-based QoS control method and to improve a response time of a service request by putting a priority to the service request.
  • a terminal apparatus includes: an acquisition unit configured to acquire first Quality of Service (QoS) control information from a core network according to establishment of a session with the core network; an identification unit configured to identify an identification code of a particular application from the first QoS control information when a service flow for transmitting an uplink packet in the particular application is initially generated; and a transmission unit configured to transmit an uplink grant request including the identification code of the particular application to a Base Station (BS) apparatus, thereby allowing the BS apparatus to process the uplink grant, based on a priority of an application level identified by the identification code of the particular application.
  • QoS Quality of Service
  • the identification code of the particular application may include a substitution code which replaces identification information (APP ID) predefined for the particular application with a code value within a threshold size.
  • APP ID identification information
  • the terminal apparatus may further include, when second QoS control information is acquired from a header of a downlink packet received from the BS apparatus in connection with the service flow, a processing unit configured to apply a particular QoS parameter identified from the second QoS control information to the service flow to allow an uplink packet in the service flow to be transmitted with a QoS according to the particular QoS parameter.
  • a Base Station (BS) apparatus includes: an acquisition unit configured to acquire first Quality of Service (QoS) from a core network according to establishment of a session between a terminal apparatus and the core network; and a processing unit configured to, when an uplink grant request including an identification code of a particular application is received from the terminal apparatus according to a service flow for transmitting an uplink packet of the particular application being initially generated by the terminal apparatus, process the uplink grant based on a priority according to an application level identified by the identification code of the particular application within the first QoS control information.
  • QoS Quality of Service
  • the identification code of the particular application may include a substitution code which replaces identification information (APP ID) predefined for the particular application with a code value within a threshold size.
  • APP ID identification information
  • the processing unit may be configured to apply a particular QoS parameter identified from the second QoS control information to the service flow to allow the downlink packet to be transmitted to the terminal apparatus with a QoS according to the particular QoS parameter.
  • the processing unit may be configured to insert the second QoS control information into the header of the downlink packet to be transmitted to the terminal apparatus, thereby allowing the terminal apparatus to transmit the uplink packet in the service flow with the QoS according to the particular QoS parameter.
  • a method of controlling a QoS includes: an acquisition step of acquiring first Quality of Service (QoS) control information from a core network according to establishment of a session with the core network by a terminal apparatus; an identification step of identifying an identification code of a particular application from the first QoS control information by the terminal apparatus when a service flow for transmitting an uplink packet in the particular application is initially generated; and a transmission step of transmitting an uplink grant request including a QoS parameter of the particular application to a Base Station (BS) apparatus, thereby allowing the BS apparatus to process the uplink grant, based on a priority according to an application level identified by the identification code of the particular application by the terminal apparatus.
  • QoS Quality of Service
  • the identification code of the particular application may include a substitution code which replaces identification information (APP ID) predefined for the particular application with a code value within a threshold size.
  • APP ID identification information
  • the method may further include a processing step of, when second QoS control information is acquired from a header of a downlink packet received from the BS apparatus in connection with the service flow, applying a particular QoS parameter identified from the second QoS control information to the service flow to allow the uplink packet in the service flow to be transmitted with a QoS according to the particular QoS parameter by the terminal apparatus.
  • a method of controlling a QoS includes: an acquisition step of acquiring first Quality of Service (QoS) control information from a core network according to establishment of a session between a terminal apparatus and the core network by a Base Station (BS) apparatus; a reception step of, when a service flow for transmitting an uplink packet of a particular application is initially generated by the terminal apparatus, receiving an uplink grant request including an identification code of the particular application from the terminal apparatus by the BS apparatus; and a processing step of processing the uplink grant, based on a priority according to an application level identified by the identification code of the particular application within the first QoS control information by the BS apparatus.
  • QoS Quality of Service
  • the identification code of the particular application may include a substitution code which replaces identification information (APP ID) predefined for the particular application with a code value within a threshold size.
  • APP ID identification information
  • the method may further include a transmission step of, when second QoS control information is acquired from a header of a downlink packet received from the core network in connection with the service flow, applying a particular QoS parameter identified from the second QoS control information to the service flow to allow the downlink packet to be transmitted to the terminal apparatus with a QoS according to the particular QoS parameter by the BS apparatus.
  • the transmission step may include inserting the second QoS control information into the header of the downlink packet to be transmitted to the terminal apparatus, thereby allowing the terminal apparatus to transmit the uplink packet in the service flow with the QoS according to the particular QoS parameter.
  • a terminal apparatus includes: an acquisition unit configured to acquire control information from a core network; an identification unit configured to identify information related to a particular application from the control information when a service flow for transmitting an uplink packet in the particular application is initially generated; and a transmission unit configured to transmit an uplink grant request including the information related to the particular application to a Base Station (BS) apparatus, thereby allowing the BS apparatus to process the uplink grant based on the information related to the particular application.
  • BS Base Station
  • control information may comprise at least one of mapping information for mapping identification information of an application to a priority of the application and replacing information for replacing the identification information of the application into a substitution code within a threshold size.
  • the information related to the particular application may comprise at least one of a priority of the particular application and a substitution code of the particular application within the threshold size.
  • the priority of the particular application may be identified from the identification information of the particular application using the mapping information of the control information, and the substitution code of the particular application may be identified by replacing the identification information of the particular application into the substitution code of the particular application using the replacing information of the control information.
  • the terminal apparatus and the BS apparatus it is possible to derive effects of applying differential QoS, that is, service qualities to respective communication services by enabling the service flow-based QoS control without an increase in complexity compared to the conventional bearer-based QoS control method is obtained.
  • the present disclosure can derive effects of increasing a service quality which a user experiences by improving a response time of a service request through enabling the QoS control of an initial service flow generated according to the service request.
  • FIG. 1 is a flowchart illustrating a reflective QoS control method according to an embodiment of the present disclosure:
  • FIG. 2 is a flowchart illustrating a QoS control method for a service request according to an embodiment of the present disclosure
  • FIG. 3 is a flowchart illustrating a QoS control method using an application identification code according to an embodiment of the present disclosure
  • FIG. 4 is a block diagram illustrating a configuration of a terminal apparatus according to an embodiment of the present disclosure.
  • FIG. 5 is a block diagram illustrating a configuration of a BS apparatus according to an embodiment of the present disclosure.
  • the QoS control method proposed by the present disclosure may derive the following effects.
  • a response time of a service request can be improved by realizing a QoS control for an uplink corresponding to an initial service request, which has not been available to QoS control, and in that resource use efficiency can be maximized and exposure of a QoS control policy to the outside can be prevented by replacing application identification information required for the QoS control of the initial service request with a short (small) identification code.
  • Embodiments of the present disclosure will be described on the basis of a 4G (LTE/EPC) system or a 5G (next generation) system, but the main subject of the present disclosure is not limited to a particular communication system and may be applied to any system having a similar configuration. Further, steps of embodiments of the present disclosure may be changed in sequence or some steps may be omitted.
  • 4G Long Term Evolution/EPC
  • 5G next generation
  • a terminal apparatus 10 transfers a service request to a service server 50 in order to receive a new service in step S 10 .
  • a service request message is a message generated on an application layer and transmitted to a user plane.
  • the service request message uses an HTTP or a SIP.
  • the service server 50 transfers information for configuring a policy of the service to a core network 30 in response to the service request from the terminal 10 in step S 20 .
  • the message may include, for example, a service name (PDU name), information (continuity flag) on whether session continuity is needed, and information (flow descriptor, for example, an IP address, a port, and QoS control information) related to a service flow.
  • PDU name service name
  • continuity flag information on whether session continuity is needed
  • flow descriptor for example, an IP address, a port, and QoS control information
  • the core network 30 determines whether establishment (generation) of a new session (PUD session) with the terminal apparatus 10 is needed on the basis of information received from the service server 50 in S 30 .
  • the core network 30 When it is determined that the generation of the new session is needed, the core network 30 performs a process for establishing the session with the terminal apparatus 10 .
  • the core network 30 transfers information on whether session continuity is supported to the terminal apparatus 10 and a Base Station (BS) apparatus 20 .
  • BS Base Station
  • the terminal apparatus 10 and the BS apparatus 20 perform different operations according to whether the session continuity is supported.
  • the terminal apparatus 10 and the BS apparatus 20 do not perform an operation for a handover, that is, an operation for preparing the case in which an accessed cell is changed while a session is established and a service is provided
  • the operation for the handover includes a measurement configuration and report process in which the terminal apparatus 10 periodically measures intensities of signals of neighboring cells and reports the measured signal intensities to the BS.
  • the terminal apparatus 10 and the BS apparatus 20 perform the operation for the handover, that is, the operation for preparing the case in which the accessed cell is changed.
  • the terminal apparatus 10 , the BS apparatus 20 , and the core network 30 perform the remaining processes for establishing the session in step S 50 .
  • the core network 30 informs the service server 50 that the session establishment is completed in step S 60 .
  • the service server 50 transmits service traffic, that is, a downlink packet to the core network 30 in step S 70 .
  • the core network 30 When receiving the downlink packet, the core network 30 inserts (marks) QoS control information into a header of the downlink packet and transfers the downlink packet to the terminal apparatus 10 and the BS apparatus 20 in step S 80 .
  • a QoS parameter identified from the QoS control information is a value indicating a priority of a packet service flow, and the BS apparatus performs scheduling of the downlink packet and resource allocation based on the QoS parameter.
  • the terminal apparatus 10 and the BS apparatus 20 use the QoS control information included in the header of the downlink packet, thereby the same QoS parameter as that applied to the downlink packet being applied to an uplink packet in the same service flow, so as to process an uplink grant with the same priority in steps S 90 and S 100 .
  • the reflective QoS control method As described above, through the reflective QoS control method according to an embodiment of the present disclosure, it is possible to realize the service flow-based QoS control and also minimize signaling according to the QoS control by applying, to the uplink, the same QoS parameter as that applied to the downlink.
  • the reflective QoS control applies a QoS to uplink packets belonging to the same service flow when one or more downlink packets are generated, there is no QoS information that can be applied to a first uplink packet which the terminal apparatus transmits to make a request for a service when the downlink packet is generated after the terminal apparatus makes a request for a service (generally a UE-initiated service or a mobile originating service).
  • a service generally a UE-initiated service or a mobile originating service.
  • the service request message When transmission of the uplink packet is processed with a lower priority than other packets since there is no QoS information that can be applied to the first uplink packet (service request message) which the terminal apparatus transmits to make a request for a service, the service request message is not transmitted for a long time and thus a service quality which the user experiences may deteriorate.
  • the service flow-based QoS control method proposes a scheme of applying QoS control information to a service flow initially generated to make a request for the service by the terminal apparatus 10 .
  • the core network 30 transfers, to the terminal apparatus 10 and the BS apparatus 20 , QoS control information that can be applied unconditionally to an initial service flow in a process of establishing a session between the terminal apparatus 10 and the core network 30 .
  • the terminal apparatus 10 and the BS apparatus 20 receiving the QoS control information that can be applied unconditionally to the initial service flow process an uplink grant requested from the terminal apparatus 10 according to the generation of the initial service flow on the basis of the QoS control information received from the core network.
  • processing the uplink grant may be understood that the BS apparatus 20 performs resource allocation and scheduling for the uplink packet of which transmission is requested from the terminal apparatus 10 .
  • the QoS control information when the QoS control information is applied unconditionally to the initial service flow, it may be expected that the QoS control can be performed for the uplink packet but a differential QoS control cannot be performed between service flows.
  • a service flow for a particular application has a relatively high priority of a service request even though the service flow is an initial service flow.
  • the service flow has a high grade according to application service subscription information, importance of an application service is high (for example, emergency/disaster safety situation), or the priority may be high according to section of a service provider.
  • an embodiment of the present disclosure proposes a method of processing a service request generated by the terminal 10 on the basis of a priority in order to solve the limit.
  • the terminal apparatus 10 acquires QoS control information for an initial service flow from the core network 30 in a process of establishing a session with the core network 30 in steps S 110 and S 120 .
  • the terminal apparatus 10 stores the received (acquired) QoS control information in step S 130 .
  • the QoS control information may include at least one of application identification information (APP ID) and an application level identified by the application identification information (APP ID).
  • APP ID application identification information
  • APP ID application level identified by the application identification information
  • the application identification information is a value uniquely applied to each application in an OS or platform, and the application level is associated with a priority of a service request for each application.
  • the terminal apparatus 10 When a service flow for transmitting an uplink packet in a particular application is initially generated, the terminal apparatus 10 makes a request for an uplink grant to the BS apparatus 20 by applying stored QoS control information in step S 140 .
  • the terminal apparatus 10 may make a request for the uplink grant by identifying the particular application in which the service flow is generated and transmitting identification information of the particular application to the BS apparatus 20 or a level of an application identified by the identification information of the particular application to the BS apparatus 20 .
  • the terminal apparatus 10 may make a request for the uplink grant to the BS apparatus 20 with a priority according to the level of the application identified by the identification information of the particular application.
  • the BS apparatus 20 may process the uplink grant on the basis of the priority according to the level of the application identified by the identification information of the particular application in steps S 150 and S 160 .
  • the BS apparatus 20 may process the uplink grant with the priority according to the level of the particular application received from the terminal apparatus 10 in steps S 150 and S 160 .
  • the BS apparatus 20 processes the uplink grant on the basis of the priority according to the level of the application identified by identification information of the particular application received from the terminal apparatus 10 .
  • QoS control information including the application identification information (APP ID) and the level of the application identified by the application identification information (APP ID) is pre-stored in the BS apparatus 20 .
  • an uplink grant of even an initial service flow is processed according to a priority for each application determined by QoS control information, so that the differential QoS control between service flows is possible.
  • the terminal apparatus 10 transfers the identification information of the particular application or the level of the particular application to the BS apparatus 20 when the uplink grant is requested in step S 140 .
  • control waste may be serious.
  • the level of the application When the level of the application is directly transmitted to the terminal apparatus 10 , it is likely to leak the level of the application to the outside. Further, when the terminal apparatus 10 is hacked/falsified, there is a limit in that an application at a low level is falsified to an application at a high level and thus the uplink grant may be requested according to the high level.
  • an embodiment of the present disclosure proposes a method of using an application identification code, which is a substitution code generated by replacing the application identification information with a code value (having a short length) within a threshold size through, for example, a mapping table shown in [Table 1] below.
  • the application identification code may have a length shorter than application identification information, and the application identification information and the identification code may have 1:1 relationship or N:1 relationship.
  • two or more pieces of application identification information correspond to one identification code and, at this time, two applications have the same uplink level.
  • the relationship between the application identification information and the identification code may be implemented by explicit mapping information like the mapping table or may be defined in the form of a hash function.
  • the terminal apparatus 10 acquires QoS control information for an initial service flow from the core network 30 in a process of establishing a session with the core network 30 in steps S 210 and S 220 .
  • the QoS control information acquired by the terminal apparatus 10 includes, for example, a mapping table or a hash function which can replace the application identification information (APP ID) with the identification code.
  • APP ID application identification information
  • the BS apparatus 20 may acquire QoS control information for the initial service flow from the core network 30 in step S 230 , and the QoS control information acquired by the BS apparatus 20 may include, for example, the application identification code and the level of the application identified by each identification code.
  • the terminal apparatus 10 identifies the particular application and identifies an identification code which replaces identification information of the particular application with reference to the mapping table or the hash function in step S 240 .
  • the terminal apparatus 10 transmits an uplink grant request including the replaced/identified identification code to the BS apparatus 20 in step S 250 .
  • the BS apparatus 20 receiving the uplink grant request identifies the level of the particular application corresponding to the identification code received from the terminal apparatus 10 and processes the uplink grant on the basis of a priority according to the identified level of the application in steps S 260 and S 270 .
  • the uplink grant is processed according to the priority for each application determined by QoS control information, so that QoS control can be differentially performed between service flows. Further, resource use efficiency can be maximized by applying the identification code with a short length (small size), which replaces application identification information required for the QoS control for an initial service request. In addition, it is possible to prevent a QoS control policy from being exposed to the outside since the application level is not transmitted to the terminal apparatus 10 .
  • the QoS control information may be divided into QoS control information for processing an initial service flow generated according to a service request and QoS control information inserted (marked) into a downlink header according to the reflective QoS control method.
  • first QoS control information the QoS control information for processing the initial service flow
  • second QoS control information the QoS control information inserted (marked) into the downlink header
  • FIG. 4 illustrates the configuration of the terminal apparatus 10 according to an embodiment of the present disclosure.
  • the terminal apparatus 10 may include an acquisition unit 11 configured to acquire first QoS control information, an identification unit 12 configured to identify an identification code from the first QoS control information, and a transmission unit 13 configured to transmit an uplink grant request.
  • the terminal apparatus 10 may further include a processing unit 14 configured to process second QoS control information as well as the above-described elements.
  • All or at least some of the elements of the terminal apparatus 10 including the acquisition unit 11 , the identification unit 12 , the transmission unit 13 , and the processing unit 14 may be implemented in the form of a software module, a hardware module, or a combination of a software module and a hardware module.
  • the software module may be understood as, for example, instructions executed by the processor that performs calculations within the terminal apparatus 10 , and the instructions may have the form of being installed in a memory within the terminal apparatus 10 .
  • the terminal apparatus 10 makes the service flow-based QoS control possible through the above elements and, hereinafter, each element within the terminal apparatus 10 therefor will be described in more detail.
  • the acquisition unit 11 performs a function for acquiring first QoS control information.
  • the acquisition unit 11 acquires the first QoS control information from the core network 30 according to establishment of a session with the core network 30 .
  • the first QoS control information acquired from the core network 30 includes a mapping table or a hash function which can replaces identification information of each application with an identification code.
  • the BS apparatus 20 also acquires the first QoS control information for the QoS control of the initial service flow from the core network 30 .
  • the QoS control information acquired by the BS apparatus 20 may include application identification code and the level of the application identified by each identification code.
  • the identification unit 12 performs a function of identifying the application identification code.
  • the identification unit 12 identifies the particular application that generates the service flow and identifies an identification code which replaces identification information of the particular application identified with reference to a mapping table or a hash function within a first QoS.
  • the transmission unit 13 performs a function of transmitting an uplink grant request.
  • the transmission unit 13 transmits the uplink grant request including the identified identification code to the BS apparatus 20 and makes a request for scheduling and resource allocation for uplink packet transmission.
  • the BS apparatus 20 identifies a level of the particular application corresponding to the identification code received from the terminal apparatus 10 according to the uplink grant request and processes the uplink grant with a priority according to the identified level.
  • the processing unit 14 performs a function of processing second QoS control information.
  • the processing unit 14 applies a particular QoS parameter identified from the acquired second QoS control information to the service flow and thus performs transmission of an uplink packet in a subsequent service flow with a QoS according to the particular QoS parameter.
  • the processing unit 14 may apply, to the uplink packet in the same service flow, the same QoS parameter as that of the downlink packet through the use of the second QoS control information included in the header of the downlink packet so as to process the uplink grant with the same priority.
  • the acquisition unit 11 supports acquisition of the second QoS control information from the header of the downlink packet received from the BS apparatus 20 and the identification unit 12 supports identification of the particular QoS parameter applied to the downlink packet from the second QoS control information.
  • the terminal apparatus 10 includes an acquisition unit configured to acquire control information from a core network, an identification unit configured to identify information related to a particular application from the control information when a service flow for transmitting an uplink packet in the particular application is initially generated; and a transmission unit configured to transmit an uplink grant request including the information related to the particular application to a Base Station (BS) apparatus, thereby allowing the BS apparatus to process the uplink grant based on the information related to the particular application.
  • BS Base Station
  • the control information may comprise at least one of mapping information for mapping identification information of an application to a priority of the application and replacing information for replacing the identification information of the application into a substitution code within a threshold size.
  • the information related to the particular application may comprise at least one of a priority of the particular application and a substitution code of the particular application within the threshold size.
  • the priority of the particular application may be identified from the identification information of the particular application using the mapping information of the control information, and the substitution code of the particular application may be identified by replacing the identification information of the particular application into the substitution code of the particular application using the replacing information of the control information.
  • the terminal apparatus 10 processes an uplink grant according to a priority for each application and applies, to an uplink packet in the same service flow, the same QoS parameter as that of the downlink packet to process an uplink grant with the same priority.
  • the terminal apparatus 10 can perform the service flow-based QoS control without an increase in complexity compared to the existing bearer-based QoS control method and also apply the short (small) identification code which replaces application identification information required for the QoS control of the initial service request so as to maximize resource use efficiency.
  • the BS apparatus 20 may include an acquisition unit 21 configured to acquire first QoS control information and a processing unit 22 configured to process an uplink grant request from the terminal apparatus 10 and second QoS control information.
  • All or at least some of the elements of the BS apparatus 20 including the acquisition unit 21 and the processing unit 22 may be implemented in the form of a software module, a hardware module, or a combination of a software module and a hardware module.
  • the software module may be understood as, for example, instructions executed by the processor that performs calculations within the BS apparatus 20 , and the instructions may have the form of being installed in a memory within the BS apparatus 20 .
  • the BS apparatus 20 makes the service flow-based QoS control possible through the above-described elements, and each element within the BS apparatus 20 therefore will be described in more detail.
  • the acquisition unit 21 performs a function of acquiring first QoS control information.
  • the acquisition unit 21 acquires first QoS control information from the core network 30 according to establishment of a session between the terminal apparatus 10 and the core network 30 by the terminal apparatus 10 .
  • the first QoS control information acquired from the core network 30 may include an identification code of an application which replaces application identification information and a level of the application identified by each identification code.
  • the terminal apparatus 10 also acquires the first QoS control information for a QoS control of an initial service flow from the core network 30 .
  • the QoS control information which the terminal apparatus 10 acquires may include a mapping table or a hash function which can replace application identification information with a short (small) application identification code.
  • the processing unit 22 performs a function of processing an uplink grant request.
  • the processing unit 22 processes an uplink grant on the basis of a priority according to an application level identified by the identification code of the particular application within the first QoS control information.
  • the terminal apparatus 10 identifies the particular application that generates the service flow, identifies an identification code, which replaces identification information of the particular application identified with reference to a mapping table or a hash function within first QoS, and transmits an uplink grant request including the identified identification code to the BS apparatus 20 so as to make a request for scheduling and resource allocation for uplink packet transmission.
  • processing unit 22 performs a function of processing second QoS control information.
  • the processing unit 22 applies a particular QoS parameter identified from the acquired second QoS control information to the service flow and thus performs transmission of the downlink packet to the terminal apparatus with a QoS according to the particular QoS parameter.
  • the processing unit 22 inserts the second QoS control information into the header of the downlink packet transmitted to the terminal apparatus 10 and thus allows the uplink packet to be transmitted with the same QoS as that of the downlink packet according to the particular QoS parameter identified from the second QoS control information when the terminal apparatus 10 receiving the downlink packet transmits the uplink packet in the same service flow.
  • the processing unit 22 uses the second QoS control information included in the header of the downlink packet so as to process the uplink grant with the same priority by applying, to the uplink packet in the same service flow, the same QoS parameter as that of the downlink packet.
  • the BS apparatus 20 processes an uplink grant according to a priority for each application and applies, to an uplink packet in the same service flow, the same QoS parameter as that of the downlink packet to process an uplink grant with the same priority.
  • the terminal apparatus 20 can perform the service flow-based QoS control without an increase in complexity compared to the existing bearer-based QoS control method and also apply the short (small) identification code which replaces application identification information required for the QoS control of the initial service request so as to maximize resource use efficiency.
  • implementations of the functional operations and subject matter described in the present disclosure may be realized by a digital electronic circuit, by the structure described in the present disclosure, and the equivalent including computer software, firmware, or hardware including, or by a combination of one or more thereof.
  • Implementations of the subject matter described in the specification may be implemented in one or more computer program products, that is, one or more modules related to a computer program command encoded on a tangible program storage medium to control an operation of a processing system or the execution by the operation.
  • a computer-readable medium may be a machine-readable storage device, a machine-readable storage substrate, a memory device, a composition of materials influencing a machine-readable radio wave signal, or a combination of one or more thereof.
  • system covers a programmable processor, a computer, or all kinds of mechanisms, devices, and machines for data processing, including a multiprocessor and a computer.
  • the processing system may include, in addition to hardware, a code that creates an execution environment for a computer program when requested, such as a code that constitutes processor firmware, a protocol stack, a database management system, an operating system, or a combination of one or more thereof.
  • a computer program (also known as a program, software, software application, script, or code) can be written in any form of programming language, including compiled or interpreted languages, declarative or procedural languages, and it can be deployed in any form, including as a stand-alone program or module, a component, subroutine, or another unit suitable for use in a computer environment.
  • a computer program may, but need not, correspond to a file in a file system.
  • a program can be stored in a single file provided to the requested program, in multiple coordinated files (for example, files that store one or more modules, sub-programs, or portions of code), or in a portion of a file that holds other programs or data (for example, one or more scripts stored in a markup language document).
  • a computer program can be deployed to be executed on one computer or on multiple computers that are located at one site or distributed across a plurality of sites and interconnected by a communication network.
  • a computer-readable medium suitable for storing a computer program command and data includes all types of non-volatile memories, media, and memory devices, for example, a semiconductor memory device such as an EPROM, an EEPROM, and a flash memory device, and a magnetic disk such as an external hard disk or an external disk, a magneto-optical disk, a CD-ROM, and a DVD-ROM disk.
  • a processor and a memory may be added by a special purpose logic circuit or integrated into the logic circuit.
  • the implementations of the subject matter described in the specification may be implemented in a calculation system including a back-end component such as a data server, a middleware component such as an application server, a front-end component such as a client computer having a web browser or a graphic user interface which can interact with the implementations of the subject matter described in the specification by the user, or all combinations of one or more of the back-end, middleware, and front-end components.
  • the components of the system can be mutually connected by any type of digital data communication such as a communication network or a medium.

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